/**
 * Copyright 2011 Renato de Jesus Manzoni
 * 
 * SED - Software Engineering and Dependability Research Group
 * 
 *     http://www.sed.ic.unicamp.br/
 * 
 * Distributed Systems Laboratory (LSD) in the Institute of Computing (IC) at University of Campinas (UNICAMP)
 * 
 *     http://www.lsd.ic.unicamp.br/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package br.unicamp.ic.lsd.wscaa;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import br.unicamp.ic.lsd.wscaa.concurrent.ConcurrentExceptionSync;

/**
 * @author Renato de Jesus Manzoni <rjmanzoni@gmail.com>
 * 
 */
public class WSCAManager {

    private static WSCAManager instance;
    List<Object> notifyList;
    private boolean doneExceptionHandling;

    public static WSCAManager getInstance() {
	if (instance == null)
	    instance = new WSCAManager();
	return instance;
    }

    private WSCAManager() {
	refresh();
    }

    public void addNotifyMe(Object me) {
	notifyList.add(me);
    }

    public void notifyObjects() {
	this.doneExceptionHandling = true;
	for (Iterator<Object> iterator = notifyList.iterator(); iterator
		.hasNext();) {
	    Object obj = (Object) iterator.next();
	    synchronized (obj) {
		obj.notifyAll();
	    }
	}
    }

    public void start() {
	// TODO acho que seria mais interessante definir uma interface para
	// invoka o metodo que implementa ela. Isso eh para desvincular a
	// estrategia de sincronizacao
	ConcurrentExceptionSync.getInstance().refresh();
	refresh();
    }

    private void refresh() {
	doneExceptionHandling = false;
	if (notifyList == null)
	    notifyList = new ArrayList<Object>();
	else
	    notifyList.clear();
    }

    public boolean hasDoneExceptionHandling() {
	return doneExceptionHandling;
    }

}
